In addition to closing over 30 issues, we have extracted grunt.util into
its own module. As mentioned
in the 0.4.2 release,
we are in process of deprecating the grunt.util.* API. Task developers who use
these APIs should update their plugins to use the libraries recommended in
the grunt-legacy-util README.
You may use grunt-legacy-util directly as a stopgap, but we will no longer be supporting it.